How can the issue of "Dokument enthält keine Daten" be addressed in the PHP script for nullstellenbestimmung?

The issue of "Dokument enthält keine Daten" can be addressed in the PHP script for nullstellenbestimmung by checking if the document contains data before attempting to process it. This can be done by verifying if the file is not empty before reading its contents.

// Check if the file contains data before processing
if (filesize($filename) > 0) {
    // Read the contents of the file and perform nullstellenbestimmung
    $data = file_get_contents($filename);
    // Perform nullstellenbestimmung logic here
} else {
    // Handle the case where the document contains no data
    echo "Dokument enthält keine Daten";
}